FTL phasers are no harder to rationalize than subspace radio if both are just energy transmissions, though one is a tad nastier than the other. Those rapid nadions can be imbued with any quality required for the story lines involved. Navigational deflectors kick gravitons out ahead of ships at warp within what I believe has been termed a "subspace trench" (from the TNG tech manual I think...). Perhaps any FTL beams involving particles with mass could utilize something similar, or maybe some "soliton wave-rider" gizmo.
I think the standard model of the photorp would be kept as simple as possible for the vast majority of the engagements we've seen in Trek. Doesn't the TNG tech manual depict a warp sustainer propulsion unit powered by a simple "sarium krellide" (or some such - wish I'd kept that book) battery? This would be more than ample for an intercept lasting a few seconds at most.
As with long range sensor probes (or casings for klingons needing a cheap ride), fully warp capable torpedo weapons would be available, but held in reserve for situations requiring them, such as a sublight ship firing at a warp target. There would be an evolution over time, with, for example, the original ENT era "photonic torpedos" perhaps being impulse only, warp sustainer models deployed by the TOS era and full warp versions supplementing them by TNG.
I think the standard model of the photorp would be kept as simple as possible for the vast majority of the engagements we've seen in Trek. Doesn't the TNG tech manual depict a warp sustainer propulsion unit powered by a simple "sarium krellide" (or some such - wish I'd kept that book) battery? This would be more than ample for an intercept lasting a few seconds at most.
As with long range sensor probes (or casings for klingons needing a cheap ride), fully warp capable torpedo weapons would be available, but held in reserve for situations requiring them, such as a sublight ship firing at a warp target. There would be an evolution over time, with, for example, the original ENT era "photonic torpedos" perhaps being impulse only, warp sustainer models deployed by the TOS era and full warp versions supplementing them by TNG.